var map = new BMapGL.Map("container");
var point = new BMapGL.Point(106.602487,29.429754); //百度地图拾取坐标系统
map.centerAndZoom(point, 15); 
//添加控件
var scaleCtrl = new BMapGL.ScaleControl();  // 添加比例尺控件
map.addControl(scaleCtrl);
var zoomCtrl = new BMapGL.ZoomControl();  // 添加缩放控件
map.addControl(zoomCtrl);
var cityCtrl = new BMapGL.CityListControl();  // 添加城市列表控件
map.addControl(cityCtrl);